test equation in mathjax

Apr 29, 2022 • jeffatoptics [ math ]

Test mathjax equation display as below:

\[f(x) = \int_{-\infty}^\infty \hat f(\xi)\,e^{2 \pi i \xi x} \,d\xi\]

📝 enable katex with front matter in current page:
---
math: mathjax
---

math block:
\[K(a,b) = \int \mathcal{D}x(t) \exp(2\pi i S[x]/\hbar)\]
```
 $$
 K(a,b) = \int \mathcal{D}x(t) \exp(2\pi i S[x]/\hbar)
 $$
```
math inline:

this is inline function $f(x) = \int_{-\infty}^\infty \hat f(\xi)\,e^{2 \pi i \xi x} \,d\xi$ and another inline function $ e = m c^2 $
```
 this is inline function $f(x) = \int_{-\infty}^\infty \hat f(\xi)\,e^{2 \pi i \xi x} \,d\xi$ and another inline function $ e = m c^2 $
```
other equations for test:
\[y=\frac{1}{2} \times \sqrt{x^2-1} \\ y=\cfrac{1}{2+\cfrac{1}{2}} \\ y=\int \! (x^2-1) dx \\ y=\int (x^2-1) dx \\ y=\int_{a}^{b=10} (x^2-1) dx \\ y=\sum_{x=1}^ {100} (x^2-1)- 1 \\ BER= erfc(\frac{Q}{\sqrt{2}})\] \[\fbox {this is a demo equation: } \\ BER= erfc(\frac{Q}{\sqrt{2}})\]
```
 $$
 y=\frac{1}{2} \times \sqrt{x^2-1} \\
 y=\cfrac{1}{2+\cfrac{1}{2}}     \\
 y=\int \! (x^2-1) dx             \\
 y=\int (x^2-1) dx                \\
 y=\int_{a}^{b=10} (x^2-1) dx            \\
 y=\sum_{x=1}^ {100} (x^2-1)- 1          \\
 BER= erfc(\frac{Q}{\sqrt{2}})
 $$
    
 $$
 \fbox {this is a demo equation: }   \\
 BER= erfc(\frac{Q}{\sqrt{2}})
 $$
```

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